HCG levels advice

Ok. Got results back. My HCG levels are increasing but not doubling. LMP was 09MAR2016. 

Tests taken April:

1) 11th-229.7   1300

2)13th-300.1  0930

3)13th-329.6  1235

Worried now. But not spotting or anything and no cramps. They are now very very few and light and far in between. Sigh. They wanted us to come in to do another test. But honestly I think my hubby is right. Those tests and all those numbers are stressing me out. They told me to do medium bed rest. Only get up for bathroom and bathing. To relax. I think I'm going to refuse the test and just have them schedule me for a what I'm guessing is supposed to be 7 week ultrasound. Or if I do take the test discussions only to be done with my husband. I don't feel weird like I am miscarrying. I still am having all the symptoms. If anything the cramping went away for majority of it. Just more sleepy and lethargic now. And not constantly hungry. But if I don't eat. Believe me I get reminded with nausea lol