Ay sis, normal yan especially pag first time mo, a few of us got dizzy or had mild headaches when we started primrose, kaya dapat talaga sip ng water habang kumukuha and eat something light first bago mo i-take! But since you're that far along na, better check with your OB kung paano ka kumuha and basta gawin mo as instructed, at mag-report din kung ang dizziness doesn't go away, kasi baka may iba pang reason din.