Expiriencing nausea and what feels like intense hunger?

[Kajacat]

I am pretty sure I suffer from VERY mild hypoglycemia, I am 5'2" and 95 pounds.
Usually I can tell when my body is just really hungry because I will get nauseous and the pain only subsides when I eat or lie down.
Here recently ( within the last week or so) I have started feeling this nauseous feeling even after I eat, and I have even been eating a little more than I usually do. Sometimes when this feeling comes about I can get a short lived relief by forcing a burp out of me.
My husband and I have recently started trying for a kid, and he finished inside me for the first time not long before all these symptoms started. It hasn't been long enough for my period to come around, but it should be approaching soon. I use the restroom normally ( even though fecal production increased since im eating more)
I have wasted lots of money on pregnancy tests in the past, so I don't want to go buy one thinking I could be pregnant, and it turn out to be some sort of gastrointestinal issue. Any ideas???