Roughly 4 weeks 2 days pregnant

Hey guys, so I’m roughly 4w2d pregnant. My HCG is sitting at 2200 which has been a slow rising HCg been tracking it with regular bloods for 2 weeks now as I was told I have pregnancy of unkown location.

I had a scan yesterday both internal and external as the drs are worried it’s ectopic however the scan showed no ectopic or any sign of pregnancy. The night dr advised to wait and keep doing what we’re doing and that it’s too early to see anything.

However the day Dr has just re taken my bloods to see if my HCG has gone up in the 48 hours and if not he would like to inject me with “METHOTREXATE “ which I’m not comfortable with because of all the side effects and if nothing is showing what if it isn’t medically necessary?

Has anyone had this experience before? This Dr believes if I was pregnant regardless of how early with my HCG they should be able to see even just a sac