Hey ladies who here has a had rough pregnancy after what seem like smooth sailing with previous? Morning sickness, cramps etc.

This baby #4 ( 9th pregnancy total) and this one is far worse, I'm still having more ing sickness, a lot of nausea, thrown up a few time, lost weight and tons of cramps that for some reason I've never had. I'm either in er or ob every 2-3 weeks. This baby is like naw let's go see someone I'm bored lol. I'm so exhausted I'm 16w6d... this is going to be a tough cookie worth my other children. 9,7 and 2 then this one in July.