etopic pregnancy vs. stretch cramping?

Gabby
I am 4 weeks 3 days pregnant after trying for 2years and finally pregnant with <a href="https://glowing.com/glow-fertility-program">ivf</a>.  Since 2 days after transfer I've felt bad cramping for about 5 days, now the cramping has dulled a bit at times. I have no pain at all, and then some times I have period like cramps, and sometimes I have localized cramping that throbs on one side.  Is this normal? It's not bend over pain but I definite notice it every time it happens... I have no blood and my 2 beta numbers have risen beautifully.  I just don't know how to diffritiate between normal stretching cramps and an etopic?  I too am a worrier 😌