Basis Of Oestrogen Progesterone Pill Nauseous Almost Daily Lately ...?

Nauseous almost daily lately ...? - basis of oestrogen progesterone pill

I felt really sick and tired in the last 3 months or so. Almost every day.
I recently started taking the pill) (in January. This is the only common denomonator. I'm not pregnant (my BF and use of emergency contraception, and I am very anxious to take my pills on time and I am on my period right now). I know that the pill can cause nausea, but I'm feeling sick, and have on the sugar market of the pills (inactive Sunday) 4 days long. I started yesterday evening with antibiotics for a bit last night and I felt soooo sick afterwards. This type of antibiotics has never done that before and I have no stomach "weak. But it seems that lately, things like coffee and good food make me sick.
I spoke with my doctor. and believe that the estrogen dose in my pill was too weak, sick, but I'm on another pill with another progestin, where it was. I'm tired, nausea. The other thing that could be causing this?