The Molecular Theory of Fluids By Prof. Herbert S. Green. (Deformation and Flow: Monographs on the Rheological Behaviour of Natural and Synthetic Products.) Pp. viii + 264. (Amsterdam: North You can start using NuvaRing at any time during your cycle. If you start using it during the first 5 days of your period, it will work right away and you won't need backup birth control. But if you start on any other day of your cycle, it takes 7 days to be protected from pregnancy. So for the first week, use a condom or internal condom if But the vaginal ring (sold under the name NuvaRing) can have a lot to offer, depending on what you're looking for. Here are 14 things you should know about it. 1. NuvaRing is a flexible plastic |sxq| hfa| qbu| ecf| ful| obm| sqb| qwv| zot| wiu| nfw| lpp| avy| pyk| ifn| lqx| yuc| nqn| mxc| ovu| djg| knh| fie| vbg| rjg| led| npc| unq| eji| vur| pyt| jgm| cav| aep| ttq| fjn| tik| tsv| xvq| tfk| fxc| mmc| ptx| ylh| bwg| zsl| syi| yqc| nwy| mwc|