My latest hemoglobin count is 7.9 ( I recently had infection and fever). I normally have around 9-10.
As mentioned in the post above, with infection the Hb levels go down, so I think you will get back to your normal Hb levels. You might want to drink as much fluids as possible.
This new doctor told me to take "Fer-In-Sol" which seems to be an iron supplement but my old hemotologist strongly advised me to avoid eating/taking either food or multivitamins that includes iron. I am confused. What should I do? I can't find ferritin level in my complete blood test.
Unless you get your Ferritin results, I do not think we can answer. Yes, Ferrisol is an iron medication, so you surely might want to avoid it until you know for sure you are Iron deficient. CBC (Complete Blood Count) testing does not include the ferritin tests. You might want to get a full Iron panel testing done for knowing your Iron tests.
I am not sure if doctor has checked my spleen. I wonder if it can get worse and turn to thal major?
You might want to ask your doctor about your spleen, the next time you visit him/her. And HbH can not turn into thal(major) but being similar to Thal(Major), it can lead a person to tranfusion dependent as intermedia is more dependent on the clinical symptoms. You might also be able to take other drugs (like Hydroxyurea) that can help your Hb levels to maintain the current range. There are several threads on this site on it and you might want to search for it.
Although I don't have any plan to get a child in 5 years , doctor warned me that it will probably become a big problem when I decide to get a child. Do thal patients have better chance to miscarraige? Both me and my partner were premature babies. He also catches flu and cold easily but never bother to find out about if he is a carrier. I am afraid if I cannot get a child or my child will have life-threatening blood disorder.
You definately want to get your partner tested to see if he is a thalassemia carrier. That is the first step. All your worries can be avoided once you completed if he gets tested first for alpha and beta thal carrier status. You might also be able to get counselling once he is tested, so that everything is clear for you guys. Good luck.