Could I be pregnant?

So I got married two and a half ago, we’re ttc. My husband and I are in a long distance relationship (him in Pakistan and me in the U.K.).

I got my period on 23/12/18 (a few days early and I started to bleed after we finished having sex) and I finished my period on 26/12/18. We had sex on the 27th and 28th before I left to come back to the UK on the 28th. I started to ovulate from 3rd to the 7th.

I’ve been having severe back pain, stomach cramps, fatigue, feeling lightheaded even when just sitting, sensitive to smell, feeling hungry all the time, my breasts are huge/nipples hurt like crazy, headaches, bloated, also had some spotting.

This might sound crazy but I also feel pregnant

My period is in two days, should I test tomorrow?

I forgot to mention I’m 20.