can you get light cramps while pregnant??

So we been TTC for 5 months this month we literally had sex everyday on My fertile window ! My period was suppose to come on btw the 21-25 like always. I've been experiencing light cramps so when I'm at work I run to the bathroom to check or I just end up putting on a panty liner just in case she's tricking me again because it feels like my AF starts but it just ends up be being super wet down there ! I'm waiting  until next month to see if It doesn't come on. but I'm just curious can you have light cramps while in your very early pregnancy stage ? I haven't experienced nothing else like breast tenderness, fatigue or nothing  so I'm not sure